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Titolo:
Simple and novel method for measuring conduction velocity of A delta fibers in humans
Autore:
Naka, D; Kakigi, R;
Indirizzi:
Natl Inst Physiol Sci, Dept Integrat Physiol, Okazaki, Aichi 4448585, Japan Natl Inst Physiol Sci Okazaki Aichi Japan 4448585 i, Aichi 4448585, Japan
Titolo Testata:
JOURNAL OF CLINICAL NEUROPHYSIOLOGY
fascicolo: 2, volume: 15, anno: 1998,
pagine: 150 - 153
SICI:
0736-0258(199803)15:2<150:SANMFM>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
SURAL NERVE-STIMULATION; EVOKED MAGNETIC-FIELDS; CEREBRAL POTENTIALS; BRAIN;
Keywords:
pain; peripheral nerve; conduction study; thin fiber; electrical stimulation; sleep;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Naka, D Natl Inst Physiol Sci, Dept Integrat Physiol, Okazaki, Aichi 4448585, Japan Natl Inst Physiol Sci Okazaki Aichi Japan 4448585 4448585, Japan
Citazione:
D. Naka e R. Kakigi, "Simple and novel method for measuring conduction velocity of A delta fibers in humans", J CL NEURPH, 15(2), 1998, pp. 150-153

Abstract

We report a simple new method for measuring the conduction velocity (CV) of A delta fibers in normal subjects. A large positive component of somatosensory evoked potential (SEP) whose peak latency was approximately 250 ms was clearly recorded only when strong electrical stimulation causing a definite painful feeling was applied to the skin. The CV of the peripheral nerve was calculated by measuring the latency difference of this component between the distal-stimulated SEP and proximal-stimulated SEP and the distance between two stimulus sites. The CV was approximately 11.4 m/s, (range 8.8-15.9 m/s), in the range of A delta fibers. The sleep effect on pain-related SEP was also observed in 3 subjects. The amplitude of pain-related SEP decreased with the progress of sleep stage. This simple and novel method is available in most clinics and should be very useful in investigating the physiologic functions of peripheral nerves in patients as well as normal subjects.

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Documento generato il 22/01/20 alle ore 12:38:20